Whsmp · OPW16/0021

 Use of excavation               -     secured at the top and bottom against displacement;                workplace
                                                                                                           2013 QLD
  equipment.                      -     placed so the stiles of the ladder extend 1m beyond the
                                                                                                          Mobile crane
                                        landing place;                                                     COP 2006
                                   - placed so that there is a safe place to stand when leaving            QLD
                                        the ladder; and                                                   Excavation
                                   - Not made of metal or with wire reinforcing where there’s              COP 2014
                                        a risk of contact with electricity.                                NSW
                                                                                                          Managing
                              4   Shoring will be provided where there is a reasonable likelihood          the risks of   Subcontractor / HSO
                                  of a fall or dislodgement of earth, rock or other material from          plant in the
                                  a height of >1.5m that could harm a person. An adequate                  workplace
                                  supply of shoring equipment will be provided and used.                   2014 NSW
                              4   Caissons and cofferdams will be of sound construction and               Plant COP
                                                                                                                          Subcontractor
                                                                                                           VIC 1995
                                  secured into position to prevent movement.                              Excavation
                              4   All trenches over 1.5m deep will have at least one or a                  COP WA         Subcontractor / HSO
                                  combination of the following controls to address each side of            2005
                                  the trench:                                                             Safety
                                                                                                           guarding of
                                  - Shoring (with commercially manufactured sheeting which
                                                                                                           plant and
                                    has been designed by and engineer for its specific use and             machinery
                                    erected in accordance with the manufacturer / supplier’s               WA 2009
                                    instructions or sheeting / timber where a competent person            Excavation
                                    has inspected the trench and shoring and approved the use              Work COP
                                                                                                           TAS & SA
                                    of the timber / sheeting),                                             2012
                                  - Benching (benches no higher than they are wide unless a               Managing
                              5     geo-technical engineer has approved a greater height in                the risks of
                                    writing).                                                              plant in the
                                                                                                           workplace
                                  - battering (not be more than 45 degrees from the horizontal
                                                                                                           TAS & SA
                                    unless a geo-technical engineer has approved the greater               2012
                                    angle in writing), or
                                  - geotechnical engineer’s certificate which approves in
                                    writing all sides of the trench as safe from collapse, states in
                                    writing how long the approval lasts if there is no stated
                                    natural occurrence that could affect adversely the stability
                                    of the trench and states in writing the natural occurrences
                                    that could adversely affect the stability of the trench.
                              5   Where a trench is more than 1.5m deep and not shored,                                   HSO /Site Manager
                                  benched or battered and something happens that could affect
                                  the stability of the trench or put someone at risk, work in the
                                  trench will be stopped immediately and all persons will be
                                  excluded from the trench. Work will not restart and persons
                                  will not be permitted to enter the trench until a geo-technical
                                  engineer inspects the trench and approves re-entry in writing
                                  or all sides of the trench are shored, benched, battered or a

                      WHS Management Plan – Appendix 1 – Project Risk Assessment
                                                                                                                                          Page 31